-16, UNF, Overall Length 4 1/4 in, Cobalt, TiCN, Right Hand, Thread Length 1 3/16 in, 75 Percent Thread Drill Size 23/32 in, Thread Limit H7, Class of Fit 3B.Thread Forming Tap, Thread Size 3/4 In.
-18, UNF, Overall Length 3 13/16 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1 5/32 in, Tap Chamfer Plug, Thread Limit H3, Number of Flutes 4.Screw Thread Insert STI Tap, Thread Size 9/16 In.